t/t3210-pack-refs.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Amos Waterland
   4 # Copyright (c) 2006 Christian Couder
   5 #
   6
   7 test_description='git pack-refs should not change the branch semantic
   8
   9 This test runs git pack-refs and git show-ref and checks that the branch
  10 semantic is still the same.
  11 '
  12 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
  13 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
  14
  15 TEST_PASSES_SANITIZE_LEAK=true
  16 . ./test-lib.sh
  17
  18 test_expect_success 'enable reflogs' '
  19         git config core.logallrefupdates true
  20 '
  21
  22 test_expect_success 'prepare a trivial repository' '
  23         echo Hello > A &&
  24         git update-index --add A &&
  25         git commit -m "Initial commit." &&
  26         HEAD=$(git rev-parse --verify HEAD)
  27 '
  28
  29 SHA1=
  30
  31 test_expect_success 'see if git show-ref works as expected' '
  32         git branch a &&
  33         SHA1=$(cat .git/refs/heads/a) &&
  34         echo "$SHA1 refs/heads/a" >expect &&
  35         git show-ref a >result &&
  36         test_cmp expect result
  37 '
  38
  39 test_expect_success 'see if a branch still exists when packed' '
  40         git branch b &&
  41         git pack-refs --all &&
  42         rm -f .git/refs/heads/b &&
  43         echo "$SHA1 refs/heads/b" >expect &&
  44         git show-ref b >result &&
  45         test_cmp expect result
  46 '
  47
  48 test_expect_success 'git branch c/d should barf if branch c exists' '
  49         git branch c &&
  50         git pack-refs --all &&
  51         rm -f .git/refs/heads/c &&
  52         test_must_fail git branch c/d
  53 '
  54
  55 test_expect_success 'see if a branch still exists after git pack-refs --prune' '
  56         git branch e &&
  57         git pack-refs --all --prune &&
  58         echo "$SHA1 refs/heads/e" >expect &&
  59         git show-ref e >result &&
  60         test_cmp expect result
  61 '
  62
  63 test_expect_success 'see if git pack-refs --prune remove ref files' '
  64         git branch f &&
  65         git pack-refs --all --prune &&
  66         ! test -f .git/refs/heads/f
  67 '
  68
  69 test_expect_success 'see if git pack-refs --prune removes empty dirs' '
  70         git branch r/s/t &&
  71         git pack-refs --all --prune &&
  72         ! test -e .git/refs/heads/r
  73 '
  74
  75 test_expect_success 'git branch g should work when git branch g/h has been deleted' '
  76         git branch g/h &&
  77         git pack-refs --all --prune &&
  78         git branch -d g/h &&
  79         git branch g &&
  80         git pack-refs --all &&
  81         git branch -d g
  82 '
  83
  84 test_expect_success 'git branch i/j/k should barf if branch i exists' '
  85         git branch i &&
  86         git pack-refs --all --prune &&
  87         test_must_fail git branch i/j/k
  88 '
  89
  90 test_expect_success 'test git branch k after branch k/l/m and k/lm have been deleted' '
  91         git branch k/l &&
  92         git branch k/lm &&
  93         git branch -d k/l &&
  94         git branch k/l/m &&
  95         git branch -d k/l/m &&
  96         git branch -d k/lm &&
  97         git branch k
  98 '
  99
 100 test_expect_success 'test git branch n after some branch deletion and pruning' '
 101         git branch n/o &&
 102         git branch n/op &&
 103         git branch -d n/o &&
 104         git branch n/o/p &&
 105         git branch -d n/op &&
 106         git pack-refs --all --prune &&
 107         git branch -d n/o/p &&
 108         git branch n
 109 '
 110
 111 test_expect_success 'test excluded refs are not packed' '
 112         git branch dont_pack1 &&
 113         git branch dont_pack2 &&
 114         git branch pack_this &&
 115         git pack-refs --all --exclude "refs/heads/dont_pack*" &&
 116         test -f .git/refs/heads/dont_pack1 &&
 117         test -f .git/refs/heads/dont_pack2 &&
 118         ! test -f .git/refs/heads/pack_this'
 119
 120 test_expect_success 'test --no-exclude refs clears excluded refs' '
 121         git branch dont_pack3 &&
 122         git branch dont_pack4 &&
 123         git pack-refs --all --exclude "refs/heads/dont_pack*" --no-exclude &&
 124         ! test -f .git/refs/heads/dont_pack3 &&
 125         ! test -f .git/refs/heads/dont_pack4'
 126
 127 test_expect_success 'test only included refs are packed' '
 128         git branch pack_this1 &&
 129         git branch pack_this2 &&
 130         git tag dont_pack5 &&
 131         git pack-refs --include "refs/heads/pack_this*" &&
 132         test -f .git/refs/tags/dont_pack5 &&
 133         ! test -f .git/refs/heads/pack_this1 &&
 134         ! test -f .git/refs/heads/pack_this2'
 135
 136 test_expect_success 'test --no-include refs clears included refs' '
 137         git branch pack1 &&
 138         git branch pack2 &&
 139         git pack-refs --include "refs/heads/pack*" --no-include &&
 140         test -f .git/refs/heads/pack1 &&
 141         test -f .git/refs/heads/pack2'
 142
 143 test_expect_success 'test --exclude takes precedence over --include' '
 144         git branch dont_pack5 &&
 145         git pack-refs --include "refs/heads/pack*" --exclude "refs/heads/pack*" &&
 146         test -f .git/refs/heads/dont_pack5'
 147
 148 test_expect_success 'see if up-to-date packed refs are preserved' '
 149         git branch q &&
 150         git pack-refs --all --prune &&
 151         git update-ref refs/heads/q refs/heads/q &&
 152         ! test -f .git/refs/heads/q
 153 '
 154
 155 test_expect_success 'pack, prune and repack' '
 156         git tag foo &&
 157         git pack-refs --all --prune &&
 158         git show-ref >all-of-them &&
 159         git pack-refs &&
 160         git show-ref >again &&
 161         test_cmp all-of-them again
 162 '
 163
 164 test_expect_success 'explicit pack-refs with dangling packed reference' '
 165         git commit --allow-empty -m "soon to be garbage-collected" &&
 166         git pack-refs --all &&
 167         git reset --hard HEAD^ &&
 168         git reflog expire --expire=all --all &&
 169         git prune --expire=all &&
 170         git pack-refs --all 2>result &&
 171         test_must_be_empty result
 172 '
 173
 174 test_expect_success 'delete ref with dangling packed version' '
 175         git checkout -b lamb &&
 176         git commit --allow-empty -m "future garbage" &&
 177         git pack-refs --all &&
 178         git reset --hard HEAD^ &&
 179         git checkout main &&
 180         git reflog expire --expire=all --all &&
 181         git prune --expire=all &&
 182         git branch -d lamb 2>result &&
 183         test_must_be_empty result
 184 '
 185
 186 test_expect_success 'delete ref while another dangling packed ref' '
 187         git branch lamb &&
 188         git commit --allow-empty -m "future garbage" &&
 189         git pack-refs --all &&
 190         git reset --hard HEAD^ &&
 191         git reflog expire --expire=all --all &&
 192         git prune --expire=all &&
 193         git branch -d lamb 2>result &&
 194         test_must_be_empty result
 195 '
 196
 197 test_expect_success 'pack ref directly below refs/' '
 198         git update-ref refs/top HEAD &&
 199         git pack-refs --all --prune &&
 200         grep refs/top .git/packed-refs &&
 201         test_path_is_missing .git/refs/top
 202 '
 203
 204 test_expect_success 'do not pack ref in refs/bisect' '
 205         git update-ref refs/bisect/local HEAD &&
 206         git pack-refs --all --prune &&
 207         ! grep refs/bisect/local .git/packed-refs >/dev/null &&
 208         test_path_is_file .git/refs/bisect/local
 209 '
 210
 211 test_expect_success 'disable reflogs' '
 212         git config core.logallrefupdates false &&
 213         rm -rf .git/logs
 214 '
 215
 216 test_expect_success 'create packed foo/bar/baz branch' '
 217         git branch foo/bar/baz &&
 218         git pack-refs --all --prune &&
 219         test_path_is_missing .git/refs/heads/foo/bar/baz &&
 220         test_must_fail git reflog exists refs/heads/foo/bar/baz
 221 '
 222
 223 test_expect_success 'notice d/f conflict with existing directory' '
 224         test_must_fail git branch foo &&
 225         test_must_fail git branch foo/bar
 226 '
 227
 228 test_expect_success 'existing directory reports concrete ref' '
 229         test_must_fail git branch foo 2>stderr &&
 230         test_grep refs/heads/foo/bar/baz stderr
 231 '
 232
 233 test_expect_success 'notice d/f conflict with existing ref' '
 234         test_must_fail git branch foo/bar/baz/extra &&
 235         test_must_fail git branch foo/bar/baz/lots/of/extra/components
 236 '
 237
 238 test_expect_success 'reject packed-refs with unterminated line' '
 239         cp .git/packed-refs .git/packed-refs.bak &&
 240         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 241         printf "%s" "$HEAD refs/zzzzz" >>.git/packed-refs &&
 242         echo "fatal: unterminated line in .git/packed-refs: $HEAD refs/zzzzz" >expected_err &&
 243         test_must_fail git for-each-ref >out 2>err &&
 244         test_cmp expected_err err
 245 '
 246
 247 test_expect_success 'reject packed-refs containing junk' '
 248         cp .git/packed-refs .git/packed-refs.bak &&
 249         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 250         printf "%s\n" "bogus content" >>.git/packed-refs &&
 251         echo "fatal: unexpected line in .git/packed-refs: bogus content" >expected_err &&
 252         test_must_fail git for-each-ref >out 2>err &&
 253         test_cmp expected_err err
 254 '
 255
 256 test_expect_success 'reject packed-refs with a short SHA-1' '
 257         cp .git/packed-refs .git/packed-refs.bak &&
 258         test_when_finished "mv .git/packed-refs.bak .git/packed-refs" &&
 259         printf "%.7s %s\n" $HEAD refs/zzzzz >>.git/packed-refs &&
 260         printf "fatal: unexpected line in .git/packed-refs: %.7s %s\n" $HEAD refs/zzzzz >expected_err &&
 261         test_must_fail git for-each-ref >out 2>err &&
 262         test_cmp expected_err err
 263 '
 264
 265 test_expect_success 'timeout if packed-refs.lock exists' '
 266         LOCK=.git/packed-refs.lock &&
 267         >"$LOCK" &&
 268         test_when_finished "rm -f $LOCK" &&
 269         test_must_fail git pack-refs --all --prune
 270 '
 271
 272 test_expect_success 'retry acquiring packed-refs.lock' '
 273         LOCK=.git/packed-refs.lock &&
 274         >"$LOCK" &&
 275         test_when_finished "wait && rm -f $LOCK" &&
 276         {
 277                 ( sleep 1 && rm -f $LOCK ) &
 278         } &&
 279         git -c core.packedrefstimeout=3000 pack-refs --all --prune
 280 '
 281
 282 test_expect_success SYMLINKS 'pack symlinked packed-refs' '
 283         # First make sure that symlinking works when reading:
 284         git update-ref refs/heads/lossy refs/heads/main &&
 285         git for-each-ref >all-refs-before &&
 286         mv .git/packed-refs .git/my-deviant-packed-refs &&
 287         ln -s my-deviant-packed-refs .git/packed-refs &&
 288         git for-each-ref >all-refs-linked &&
 289         test_cmp all-refs-before all-refs-linked &&
 290         git pack-refs --all --prune &&
 291         git for-each-ref >all-refs-packed &&
 292         test_cmp all-refs-before all-refs-packed &&
 293         test -h .git/packed-refs &&
 294         test "$(test_readlink .git/packed-refs)" = "my-deviant-packed-refs"
 295 '
 296
 297 test_done